/Engine/Plugins/Runtime/Metasound/Source/MetasoundFrontend/Public/MetasoundFrontendController.h
[FInputHandle](API\Plugins\MetasoundFrontend\FInputHandle) AddOutput ( const [FVertexName](API\Plugins\MetasoundGraphCore\FVertexName) & InVertexName, const [FMetasoundFrontendLiteral](API\Plugins\MetasoundFrontend\FMetasoundFrontendLiteral) * InDefault )